Bowl releasing slip,申请号US19350009268-传众专利搜索

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发明名称	Bowl releasing slip
摘要
申请公布号	US2086652(A)	申请公布日期	1937.07.13
申请号	US19350009268	申请日期	1935.03.04
申请人	VOLPIN ALEXANDER S	发明人	VOLPIN ALEXANDER S.
分类号	E21B19/10	主分类号	E21B19/10
代理机构		代理人
主权项
地址

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